Shurflo 2088-712-244 Installation Manual
MARINE POTABLE WATER PUMP
Installation and Operation Manual
SHURflo's Marine Duty Potable Water Pumps were developed to
endure the harsh marine environment. The patented Tri-a-fram
design delivers smooth, consistent flow at all ranges of operation,
while drawing low current. The balanced diaphragm design
incorporates precision ball bearings for long life. Each motor is
equipped with an integral thermal breaker and all are U/L Marine
listed. All Marine duty pumps have sealed switches and are
finished with a baked-on polyurethane coating to inhibit
corrosion. Marine duty potable water pumps are enclosed to
prevent incidental moisture from entering; however, they are not
intended for environments where splashed water is present. When
installed correctly, Marine Duty Potable Water Pumps provide
years of quiet operation.
911-448 Rev. E 1/98
®
GENERAL INFORMATION
SHURflo realizes that in many instances our pump is being installed as a replacement pump within an existing system. The following guidelines should be considered
to achieve optimum pump operation.
M
The pump may be mounted in any position. If
•
mounting the pump vertically, the pump head should
]
be in the down position so that water will not enter
the motor.
Use #8 stainless steel hardware to fasten the pump.
•
Choose a solid surface (thick plywood) that will
not amplify pump operation. The mounting feet
are intended to isolate the pump from the
mounting surface; over tightening, flattening, or
use of oversized screws will reduce the ability to
isolate vibration/noise.
Electrical
The pump should be on a dedicated (individual)
•
circuit protected by the specified "slow blow" fuse
indicated on the motor label.
A U/L approved marine duty (ignition protected)
•
switch rated at or above 15 amps is recommended,
and must interrupt current flow on the positive (+
red) lead.
The pump must be grounded to a "known ground"
•
(battery). The ground wire must be the same size
(gauge/
M
m2) as the positive wire.
Mounting
The pump can be at the same level or below the
•
water tank. It may be positioned above the water
tank if needed, as it is capable of a 6 ft. [1.8
vertical prime. Horizontal inlet tubing will allow
priming to 30 ft. [9
Consider a dry location that allows easy access if
•
maintenance is required. The pump should not be
located in an area of less than one cubic foot
unless adequate ventilation is provided. Excessive
heat may trigger the integral thermal breaker and
interrupt operation. When the temperature drops the
breaker will automatically reset and start operation.
M
].
Wire size (gauge/Mm2) is based on the distance from
•
the power source to the pump. Recommended size
wire is
50ft.
The total current draw on the circuit must not
•
#
14 gauge
[6-15M]
use #12 gauge [4
[2.5Mm2]
. For lengths of 20-
M
m2]
.
exceed 15 amps. If the pump is used in
conjunction with other components, overload
current protection (fuse or circuit breaker) and
wire size must be for the total amp requirement of
all devices on the circuit.
Plumbing
SHURflo recommends at least 1ft. [.3M] of
•
½"[13mm] I.D. flexible high pressure tubing to both
ports. Ideally the pump's ports/strainer should not
be connected to plastic or rigid pipe. The pump's
normal oscillation may transmit through rigid
plumbing causing noise, and possibly loosen or
crack components.
Installation of a 50 mesh strainer is recommended to
•
prevent foreign debris from entering the pum p.
The SHURflo In-Line Strainer (shown) has a twist-
lock feature allowing simple cleaning when plumbed
with flexible tubing.
SHURflo swivel barb fittings provide easy
•
removal if maintenance or access is required. The
fittings are designed with a "taper-seal", creating a
water tight connection when hand-tightened.
Always secure barb tubing connections with properly
sized stainless steel clamps to prevent leaks. Never
use Teflon tape or sealing compounds on threads.
Sealer may enter the pump causing a failure. Failure
due to foreign debris is not covered under warranty.
Rapid cycling may be caused by excessive back
•
pressure created by one or more of the following
within a plumbing system :
Water filters and purifiers not on separate feed lines.
!
Flow restrictors in faucets and shower heads.
!
Small I.D. lines. Pipe/tubing should be at least
!
½"[13mm] I.D. for m ain lines.
Restrictive fittings and connections (elbows,
!
"T's", feeder lines to faucets, etc.)
ADJUSTMENT OF SWITCH SHUT-OFF
Restrictions in a plumbing system may cause the pump
to rapid cycle (
ON/OFF
within 2 sec.) during low flow
demands. Cycling should be minimized to prevent
pulsating flow, and to achieve maxim um pum p life.
To determine if adjustment is necessary, turn a faucet
to lower than average flow of water. The pump should
cycle, but its "
OFF
time" must be 2 sec. or longer. If the
cycling is correct, leave well enough alone. If the pump
is cycling rapidly, increase the setting by turning the
MAX
screw clockwise (1½ turn
for 1 sec. with at least 2 sec. "
.) until the pump operates
OFF
time". If cycling
cannot be minimized consider removing plumbing
restrictions or simply install a SHUR flo Accum ulator.
ON
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